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    <title>ntfy.sh: EventSource Example</title>
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<h1>ntfy.sh: EventSource Example</h1>
<p>
    This is an example showing how to use <a href="https://ntfy.sh">ntfy.sh</a> with
    <a href="https://developer.mozilla.org/en-US/docs/Web/API/EventSource">EventSource</a>.<br/>
    This example doesn't need a server. You can just save the HTML page and run it from anywhere.
</p>
<button id="publishButton">Send test notification</button>
<p><b>Log:</b></p>
<div id="events"></div>

<script type="text/javascript">
    const publishURL = `https://ntfy.sh/example`;
    const subscribeURL = `https://ntfy.sh/example/sse`;
    const events = document.getElementById('events');
    const eventSource = new EventSource(subscribeURL);

    // Publish button
    document.getElementById("publishButton").onclick = () => {
        fetch(publishURL, {
            method: 'POST', // works with PUT as well, though that sends an OPTIONS request too!
            body: `It is ${new Date().toString()}. This is a test.`
        })
    };

    // Incoming events
    eventSource.onopen = () => {
        let event = document.createElement('div');
        event.innerHTML = `EventSource connected to ${subscribeURL}`;
        events.appendChild(event);
    };
    eventSource.onerror = (e) => {
        let event = document.createElement('div');
        event.innerHTML = `EventSource error: Failed to connect to ${subscribeURL}`;
        events.appendChild(event);
    };
    eventSource.onmessage = (e) => {
        let event = document.createElement('div');
        event.innerHTML = e.data;
        events.appendChild(event);
    };
</script>

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